Communication control method

Abstract

A communication control method is used in a mobile communication system for providing a multicast broadcast service (MBS) from a base station to a user equipment, and includes transmitting, by the base station, to the user equipment, a message used to perform configuration related to a Radio Link Control (RLC) entity of the user equipment. The message includes an information element designating an operation mode for the RLC entity for an MBS traffic channel transmitting MBS data.

1 . A communication control method used in a mobile communication system for providing a multicast broadcast service (MBS) from a base station to a user equipment, the communication control method comprising:
 transmitting, by the base station, to the user equipment, a message used to perform configuration related to a Radio Link Control (RLC) entity of the user equipment, wherein   the message comprises an information element designating an operation mode for the RLC entity for an MBS traffic channel transmitting MBS data.   
     
     
         2 . The communication control method according to  claim 1 , wherein 
 the information element designates, as an operation mode of the RLC entity, a first mode in which automatic retransmission control is performed and/or a second mode in which the automatic retransmission control is not performed.   
     
     
         3 . The communication control method according to  claim 1 , wherein 
 the message further comprises an identifier identifying the MBS traffic channel, and   the information element is associated with the identifier.   
     
     
         4 . The communication control method according to  claim 2 , further comprising:
 configuring an operation mode of the RLC entity in accordance with the information element when the user equipment is in a Radio Resource Control (RRC) connected state, and   configuring the second mode regardless of the information element when the user equipment is in an RRC idle state or an RRC inactive state.   
     
     
         5 . A base station providing a multicast broadcast service (MBS) from a base station to a user equipment, the base station comprising:
 a transmitter configured to transmit to a user equipment, a message used to perform configuration related to a Radio Link Control (RLC) entity of the user equipment, wherein   the message comprises an information element designating an operation mode for the RLC entity for an MBS traffic channel transmitting MBS data.   
     
     
         6 . An apparatus controlling a user equipment in a mobile communication system for providing a multicast broadcast service (MBS) from a base station to a user equipment, the apparatus comprising a processor and a memory coupled to the processor, the processor configured to
 receive from a base station, a message used to perform configuration related to a Radio Link Control (RLC) entity of the user equipment, wherein   the message comprises an information element designating an operation mode for the RLC entity for an MBS traffic channel transmitting MBS data.   
     
     
         7 . A user equipment in a mobile communication system for providing a multicast broadcast service (MBS) from a base station to a user equipment, the user equipment comprising a processor and a memory coupled to the processor, the processor configured to 
 receive from a base station, a message used to perform configuration related to a Radio Link Control (RLC) entity of the user equipment, wherein   the message comprises an information element designating an operation mode for the RLC entity for an MBS traffic channel transmitting MBS data.